YPS-Beer/backend/YPS.Beer.Tests/Controllers/FavouritesControllerTests.cs

using System.Security.Claims;
using System.Security.Principal;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.HttpResults;
using Microsoft.AspNetCore.Mvc;
using NSubstitute;
using NUnit.Framework;
using YPS.Beer.Controllers;
using YPS.Beer.DTOs.Requests;
using YPS.Beer.Models;
using YPS.Beer.Services;

namespace YPS.Beer.Tests.Controllers;

public class FavouritesControllerTests
{
    [Test]
    public async Task GetFavourites_ReturnsEmptyArray_WhenUserHasNoFavourites()
    {
        var beerService = Substitute.For<IBeerService>();
        var punkService = Substitute.For<IPunkService>();

        beerService.GetUserById("123456").Returns(new User
        {
            Id = "123456",
        });

        var identity = new GenericIdentity("adf");
        identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, "123456"));

        var controller = new FavouritesController(beerService, punkService)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(identity),
                }
            }
        };

        var result = await controller.GetFavourites();
        var resultObject = result as OkObjectResult;
        var resultValue = resultObject?.Value as IEnumerable<Models.Beer>;

        Assert.That(resultValue, Is.Empty);
    }

    [Test]
    public async Task GetFavourites_ReturnsFavouriteBeers_WhenUserHasFavourites()
    {
        var beerService = Substitute.For<IBeerService>();
        var punkService = Substitute.For<IPunkService>();

        beerService.GetUserById("123456").Returns(new User
        {
            Id = "123456",
            Favourites =
            {
                new Favourite
                {
                    Id = 1,
                    BeerId = 34,
                    UserId = "123456",
                },
                new Favourite
                {
                    Id = 2,
                    BeerId = 4,
                    UserId = "123456",
                },
                new Favourite
                {
                    Id = 3,
                    BeerId = 56,
                    UserId = "654321",
                }
            }
        });

        punkService.GetBeers(Arg.Is<int[]>(ids => ids[0] == 34 && ids[1] == 4)).Returns(new List<Models.Beer>
        {
            new()
            {
                Id = 34,
                Name = "This beer!",
            },
            new()
            {
                Id = 4,
                Name = "Another beer!",
            }
        });

        var identity = new GenericIdentity("adf");
        identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, "123456"));

        var controller = new FavouritesController(beerService, punkService)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(identity),
                }
            }
        };

        var result = await controller.GetFavourites();
        var resultObject = result as OkObjectResult;
        var resultValue = resultObject?.Value as IEnumerable<Models.Beer>;
        var resultList = resultValue?.ToArray();

        Assert.That(resultList, Is.Not.Null);
        Assert.That(resultList, Has.Length.EqualTo(2));
    }

    [Test]
    public async Task AddFavourite_ReturnsBadRequest_WhenUserAlreadyHasFavourite()
    {
        var beerService = Substitute.For<IBeerService>();
        var punkService = Substitute.For<IPunkService>();

        beerService.GetUserById("123456").Returns(new User
        {
            Id = "123456",
            Favourites =
            {
                new Favourite
                {
                    Id = 1,
                    BeerId = 34,
                    UserId = "123456",
                },
            }
        });

        var identity = new GenericIdentity("adf");
        identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, "123456"));

        var controller = new FavouritesController(beerService, punkService)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(identity),
                }
            }
        };

        var result = await controller.AddFavourite(new AddFavouriteRequest
        {
            BeerId = 34,
        });

        Assert.That(result, Is.TypeOf<BadRequestResult>());
    }

    [Test]
    public async Task AddFavourite_ReturnsCreated_WhenFavouriteAddedToUser()
    {
        var beerService = Substitute.For<IBeerService>();
        var punkService = Substitute.For<IPunkService>();

        beerService.GetUserById("123456").Returns(new User
        {
            Id = "123456",
        });

        beerService.AddFavouriteToUser("123456", Arg.Is<Favourite>(f => f.BeerId == 34)).Returns(new Favourite
        {
            Id = 1,
            UserId = "123456",
            BeerId = 34,
        });


        var identity = new GenericIdentity("adf");
        identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, "123456"));

        var controller = new FavouritesController(beerService, punkService)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    User = new ClaimsPrincipal(identity),
                }
            }
        };

        var result = await controller.AddFavourite(new AddFavouriteRequest
        {
            BeerId = 34,
        });

        Assert.That(result, Is.TypeOf<CreatedResult>());

        await beerService.Received(1).AddFavouriteToUser("123456", Arg.Is<Favourite>(f => f.BeerId == 34));
    }
}